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[refurb] Implement single-item-membership-test (FURB171) (#7815)

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## Summary

Implement
[`no-single-item-in`](https://github.com/dosisod/refurb/blob/master/refurb/checks/iterable/no_single_item_in.py)
as `single-item-membership-test` (`FURB171`).

Uses the helper function `generate_comparison` from the `pycodestyle`
implementations; this function should probably be moved, but I am not
sure where at the moment.

Update: moved it to `ruff_python_ast::helpers`.

Related to #1348.

## Test Plan

`cargo test`
This commit is contained in:
Tom Kuson 2023-10-08 15:08:47 +01:00 • committed by GitHub
parent bdd925c0f2
commit 62f1ee08e7
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12 changed files with 368 additions and 63 deletions
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crates/ruff_linter/src/codes.rs
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@ -923,6 +923,7 @@ pub fn code_to_rule(linter: Linter, code: &str) -> Option<(RuleGroup, Rule)> {
(Refurb, "140") => (RuleGroup::Preview, rules::refurb::rules::ReimplementedStarmap),
(Refurb, "145") => (RuleGroup::Preview, rules::refurb::rules::SliceCopy),
(Refurb, "148") => (RuleGroup::Preview, rules::refurb::rules::UnnecessaryEnumerate),
(Refurb, "171") => (RuleGroup::Preview, rules::refurb::rules::SingleItemMembershipTest),
(Refurb, "177") => (RuleGroup::Preview, rules::refurb::rules::ImplicitCwd),
// flake8-logging